A query is an action/request for data from a database.
The request should come from a table or a combination of tables using a code known as the query. The system will understand and process the request accordingly, whether to extract data from multiple tables, insert data, or display data in the form of the table itself.
Let’s say that you want to order a cake at a bakery. You request by saying, “Can I have a chocolate cake with a happy birthday wish on top of it?” The baker will understand what you want and give you the cake with a wish on top as requested.
A query works the same way – it adds meaning to the code to understand and perform an action accordingly.
A database can store data in multiple tables. Tables consist of columns that store the data’s attributes and rows or records of data. A query helps to retrieve data from different tables, organize them, and display them according to the commands.
The following articles will explain the queries that we support, with examples: